raise HomeAssistantError when velux gateway reboot fails (#159585)

Co-authored-by: Josef Zweck <josef@zweck.dev>

tests/components/velux/test_init.py

@@ -13,9 +13,12 @@ from unittest.mock import patch
 import pytest
 from pyvlx.exception import PyVLXException
 
+from homeassistant.components.velux.const import DOMAIN
 from homeassistant.config_entries import ConfigEntryState
 from homeassistant.const import Platform
 from homeassistant.core import HomeAssistant
+from homeassistant.exceptions import HomeAssistantError, ServiceValidationError
+from homeassistant.setup import async_setup_component
 
 from tests.common import AsyncMock, ConfigEntry, MockConfigEntry
 
@@ -100,3 +103,45 @@ async def test_unload_does_not_disconnect_if_platform_unload_fails(
 
     # Verify disconnect was NOT called since platform unload failed
     mock_pyvlx.disconnect.assert_not_awaited()
+
+
+@pytest.mark.usefixtures("setup_integration")
+async def test_reboot_gateway_service_raises_on_exception(
+    hass: HomeAssistant, mock_pyvlx: AsyncMock
+) -> None:
+    """Test that reboot_gateway service raises HomeAssistantError on exception."""
+
+    mock_pyvlx.reboot_gateway.side_effect = OSError("Connection failed")
+    with pytest.raises(HomeAssistantError, match="Failed to reboot gateway"):
+        await hass.services.async_call(
+            "velux",
+            "reboot_gateway",
+            blocking=True,
+        )
+
+    mock_pyvlx.reboot_gateway.side_effect = PyVLXException("Reboot failed")
+    with pytest.raises(HomeAssistantError, match="Failed to reboot gateway"):
+        await hass.services.async_call(
+            "velux",
+            "reboot_gateway",
+            blocking=True,
+        )
+
+
+async def test_reboot_gateway_service_raises_validation_error(
+    hass: HomeAssistant, mock_config_entry: MockConfigEntry
+) -> None:
+    """Test that reboot_gateway service raises ServiceValidationError when no gateway is loaded."""
+    # Add the config entry but don't set it up
+    mock_config_entry.add_to_hass(hass)
+
+    # Set up the velux integration's async_setup to register the service
+    await async_setup_component(hass, DOMAIN, {})
+    await hass.async_block_till_done()
+
+    with pytest.raises(ServiceValidationError, match="No loaded Velux gateway found"):
+        await hass.services.async_call(
+            "velux",
+            "reboot_gateway",
+            blocking=True,
+        )